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JP3264064B2 - Cermet cutting tools for high speed milling - Google Patents
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JP3264064B2 - Cermet cutting tools for high speed milling - Google Patents

Cermet cutting tools for high speed milling

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Publication number
JP3264064B2
JP3264064B2 JP28050793A JP28050793A JP3264064B2 JP 3264064 B2 JP3264064 B2 JP 3264064B2 JP 28050793 A JP28050793 A JP 28050793A JP 28050793 A JP28050793 A JP 28050793A JP 3264064 B2 JP3264064 B2 JP 3264064B2
Authority
JP
Japan
Prior art keywords
carbide
titanium
nitride
total
speed milling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP28050793A
Other languages
Japanese (ja)
Other versions
JPH07112313A (en
Inventor
成己 古宇田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
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Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP28050793A priority Critical patent/JP3264064B2/en
Publication of JPH07112313A publication Critical patent/JPH07112313A/en
Application granted granted Critical
Publication of JP3264064B2 publication Critical patent/JP3264064B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は、高速フライス切削に
用いることのできるサーメット製切削工具に関するもの
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cermet cutting tool which can be used for high-speed milling.

【0002】[0002]

【従来の技術】一般に、Niおよび/またはCoを主成
分とする結合相が重量%で(以下、%は重量%を示す)
5〜25%を含有し、残りが硬質分散相からなるサーメ
ット製切削工具は、例えば、特公平4−50373号公
報に記載されており公知である。
2. Description of the Related Art In general, a binder phase containing Ni and / or Co as a main component is expressed in% by weight (hereinafter,% indicates% by weight).
A cermet cutting tool containing 5 to 25% and the balance being a hard dispersed phase is described in, for example, Japanese Patent Publication No. 4-50373 and is well known.

【0003】上記公報には、さらに上記結合相の格子定
数は3.56〜3.61オングストロームの範囲内にあ
ることおよび硬質分散相は下記の(a)〜(d)のうち
のいずれかの成分組成を有することも記載されている。
The above publication further states that the lattice constant of the binder phase is in the range of 3.56 to 3.61 Å and the hard dispersed phase is any one of the following (a) to (d): It also describes having a component composition.

【0004】(a) 炭化チタン:20〜65%、 窒化チタン:18〜40%、 炭化タングステンと炭化モリブデンの合計15〜40
%、 および/またはこれら2種以上の相互固溶体。
(A) Titanium carbide: 20 to 65%, Titanium nitride: 18 to 40%, total of 15 to 40 of tungsten carbide and molybdenum carbide
% And / or a mutual solid solution of two or more of these.

【0005】(b) 周期律表5a族金属の炭化物また
は窒化物の少なくとも1種:5〜31%と残部炭化チタ
ンとの合計:20〜65%、 窒化チタン:18〜40%、 炭化タングステンと炭化モリブデンの合計:15〜40
%、 および/またはこれら2種以上の相互固溶体。
[0005] (b) At least one of carbides or nitrides of metals of Group 5a of the periodic table: 5 to 31% and balance of titanium carbide: 20 to 65%, titanium nitride: 18 to 40%, and tungsten carbide Molybdenum carbide total: 15-40
% And / or a mutual solid solution of two or more of these.

【0006】(c) ZrまたはHfの炭化物もしくは
窒化物の少なくとも1種:0.5〜8%と残部炭化チタ
ンとの合計:20〜65%、 窒化チタン:18〜40%、 炭化タングステンと炭化モリブデンの合計:15〜40
%、 および/またはこれら2種以上の相互固溶体。
(C) Zr or Hf at least one carbide or nitride: 0.5 to 8% and the balance of titanium carbide: 20 to 65%; titanium nitride: 18 to 40%; tungsten carbide and carbonization Molybdenum total: 15-40
% And / or a mutual solid solution of two or more of these.

【0007】(d) 周期律表5a族金属の炭化物また
は窒化物の少なくとも1種:5〜31%とZrまたはH
fの炭化物もしくは窒化物の少なくとも1種:0.5〜
8%と残部炭化チタンの合計:20〜65%、 窒化チタン:18〜40%、 炭化タングステンと炭化モリブデンの合計:15〜40
%、 および/またはこれら2種以上の相互固溶体。
(D) at least one of carbides or nitrides of metals belonging to Group 5a of the periodic table: 5 to 31% and Zr or H
at least one of carbides or nitrides of f: 0.5 to
8% and balance of titanium carbide: 20 to 65%, titanium nitride: 18 to 40%, total of tungsten carbide and molybdenum carbide: 15 to 40
% And / or a mutual solid solution of two or more of these.

【0008】[0008]

【発明が解決しようとする課題】上記従来のサーメット
製切削工具は、通常の切削速度(200m/min 未満)
のフライス切削に使用しても特に問題はないが、近年、
生産効率の向上を計るために高速フライス切削(切削速
度:200m/min 以上)を行なうことが多く、上記従
来のサーメット製切削工具を用いて高速フライス切削を
行なうと刃先に熱クラックが発生し、欠損して工具寿命
が短くなるという課題があった。
The above-mentioned conventional cermet cutting tool has a normal cutting speed (less than 200 m / min).
There is no problem even if it is used for milling of
In order to improve production efficiency, high-speed milling (cutting speed: 200 m / min or more) is often performed. When high-speed milling is performed using the conventional cermet cutting tool, thermal cracks are generated at the cutting edge, There was a problem that the tool life was shortened due to chipping.

【0009】[0009]

【課題を解決するための手段】そこで、本発明者等は、
上記高速フライス切削に用いても十分な工具寿命を確保
することのできるサーメット製切削工具を得るべく研究
を行った結果、高速フライス切削時に発生する熱クラッ
クは、NiおよびCoを主成分とする結合相の格子定数
が影響し、この格子定数を3.545オングストローム
以下にすることにより高速フライス切削時の欠損に至る
までの時間を大幅に増加させることができるという知見
を得たのである。
Means for Solving the Problems Accordingly, the present inventors have
As a result of researching to obtain a cermet cutting tool that can secure a sufficient tool life even when used for high-speed milling, the thermal cracks generated during high-speed milling are bonded mainly by Ni and Co. It has been found that the lattice constant of the phase influences, and by setting this lattice constant to 3.545 Å or less, the time required to cause a defect in high-speed milling can be greatly increased.

【0010】この発明は、かかる知見にもとづいてなさ
れたものであり、Ni/(Co+Ni)で表わされる重
量比が0.5より大きく1.0より小さい範囲にあるN
iおよびCoを主成分とする結合相を重量%で5〜30
%含有し、残りが硬質分散相からなるサーメット製切削
工具であって、上記結合相の格子定数は3.524オン
グストロームを越え3.545オングストローム以下
範囲にある高速フライス切削用サーメット製切削工具に
特徴を有するものである。
The present invention has been made on the basis of the above findings, and has a weight ratio represented by Ni / (Co + Ni) in the range of more than 0.5 and less than 1.0.
5 to 30% by weight of a binder phase containing i and Co as main components
%, The balance being a hard dispersed phase, made of a cermet, wherein the lattice constant of the binder phase is 3.524 on.
The present invention is characterized by a cermet cutting tool for high-speed milling in a range of more than 3.5 Angstroms and less than 3.5 Angstroms .

【0011】上記硬質分散相は、次の(1)〜(4)の
うちのいずれかの成分組成を有する。
The hard dispersed phase has one of the following component compositions (1) to (4).

【0012】(1) 炭化チタン:25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。
(1) Titanium carbide: 25 to 60%, Titanium nitride: 15 to 30%, Total of tungsten carbide and molybdenum carbide: 10 to 35
% And / or a mutual solid solution of two or more of these.

【0013】(2) 周期律表5a族金属の炭化物また
は窒化物の少なくとも1種:3〜25%と残部炭化チタ
ンとの合計:25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。
(2) At least one kind of a carbide or nitride of a metal of Group 5a of the periodic table: 3 to 25% and a balance of titanium carbide: 25 to 60%; titanium nitride: 15 to 30%; Molybdenum carbide total: 10-35
% And / or a mutual solid solution of two or more of these.

【0014】(3) Zrおよび/またはHfの炭化物
もしくは窒化物の少なくとも1種:1〜5%と残部炭化
チタンとの合計:25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。
(3) At least one of carbides or nitrides of Zr and / or Hf: 1 to 5% and the balance of titanium carbide: 25 to 60%; titanium nitride: 15 to 30%; tungsten carbide and carbonized Molybdenum total: 10-35
% And / or a mutual solid solution of two or more of these.

【0015】(4) 周期律表5a族金属の炭化物また
は窒化物の少なくとも1種:3〜25%とZrおよび/
またはHfの炭化物もしくは窒化物の少なくとも1種:
1〜5%と残部炭化チタンとの合計:25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。
(4) At least one kind of a carbide or nitride of a metal of Group 5a of the periodic table: 3 to 25% of Zr and / or
Or at least one of carbides or nitrides of Hf:
Total of 1 to 5% and balance of titanium carbide: 25 to 60%, Titanium nitride: 15 to 30%, Total of tungsten carbide and molybdenum carbide: 10 to 35
% And / or a mutual solid solution of two or more of these.

【0016】この発明の高速フライス切削用サーメット
製切削工具の結合相は、NiおよびCoからなり、その
総量が5%未満では著しく靭性が不足するので好ましく
なく、逆に30%を越えると著しく耐摩耗性が低下する
ので好ましくない。また結合相のNi/(Co+Ni)
で表わされる重量比が0.5以下となるとCo量がNi
量に対して多くなり、結合相の格子定数が3.545オ
ングストロームより大きくなって耐欠損性が低下するの
で好ましくなく、一方、Ni/(Co+Ni)の値が
1.0となるとCoは含まれなくなり、切削工具の十分
な靭性が得られなくなるので好ましくない。
The binder phase of the cermet cutting tool for high-speed milling according to the present invention is composed of Ni and Co. If the total amount is less than 5%, the toughness is remarkably insufficient. It is not preferable because the abrasion is reduced. Also, the binder phase Ni / (Co + Ni)
When the weight ratio represented by
It is not preferable because the amount increases with respect to the amount, and the lattice constant of the binder phase becomes larger than 3.545 angstroms and the fracture resistance deteriorates. It is not preferable because sufficient toughness of the cutting tool cannot be obtained.

【0017】さらに上記結合相の格子定数は、上述のよ
うに3.545オングストロームより大きくなると応力
緩和能力が低下し、高速フライス切削時に熱クラックが
発生しやすくなって工具寿命が短くなることを既に述べ
たが、一方、Coを含む結合相の格子定数がNiの理論
格子定数(3.524オングストローム)以下にはなり
得ない。したがって、この発明の高速フライス切削用サ
ーメット製切削工具の結合相は、5〜30%を占め、そ
の組成は0.5<Ni/(Co+Ni)<1.0であっ
て、かつ格子定数は3.524オングストロームを越え
3.545オングストローム以下の範囲内にあるように
定めた。
Further, as described above, when the lattice constant of the binder phase is larger than 3.545 angstroms, the stress relaxation ability is reduced, and thermal cracks are likely to occur during high-speed milling, thereby shortening the tool life. As described above, on the other hand, the lattice constant of the binder phase containing Co cannot be less than the theoretical lattice constant of Ni (3.524 angstroms) . Therefore, the binder phase of the cermet cutting tool for high-speed milling according to the present invention accounts for 5 to 30%, the composition is 0.5 <Ni / (Co + Ni) <1.0, and the lattice constant is 3 %. Over .524 angstroms
It was determined to be within a range of 3.545 angstroms or less .

【0018】さらに、この発明の硬質分散相の成分組成
範囲を上記の如く限定した理由は以下の通りである。
The reasons for limiting the component composition range of the hard dispersed phase of the present invention as described above are as follows.

【0019】(イ) 炭化チタン 炭化チタンは、耐摩耗性を向上させる成分であり、その
量が25%未満では切削工具として実用化できるだけの
耐摩耗性が得られず、一方、60%を越えて含有させる
と熱クラックが発生しやすくなるので好ましくない。
(A) Titanium Carbide Titanium carbide is a component that improves wear resistance. If its amount is less than 25%, the wear resistance cannot be obtained enough to be practically used as a cutting tool, while it exceeds 60%. If added, thermal cracks are likely to occur, which is not preferable.

【0020】したがって、サーメット製切削工具に含ま
れる炭化チタンは25〜60%に定めた。
Therefore, the content of titanium carbide contained in the cutting tool made of cermet is set to 25 to 60%.

【0021】(ロ) 窒化チタン 窒化チタンは、15%未満では切削工具の強靱化が達成
できず、逆に30%を越えて含有させると、難焼結性で
巣孔が生じやすくなり、耐摩耗性を低下させるところか
らその含有量を15〜30%に定めた。
(B) Titanium nitride If the content of titanium nitride is less than 15%, the toughness of the cutting tool cannot be achieved. Conversely, if the content of titanium nitride exceeds 30%, porosity tends to be generated due to the difficulty in sintering. The content was determined to be 15 to 30% from the viewpoint of reducing the wear property.

【0022】(ハ) 炭化タングステンおよび炭化モリ
ブデン これらの成分はその合計量が10%未満では耐欠損性が
劣るようになるので好ましくなく、一方、30%を越え
て含有すると耐摩耗性および耐溶着性が劣るようになる
ので好ましくない。従って、炭化タングステンおよび炭
化モリブデンの合計量は10〜35%に定めた。
(C) Tungsten carbide and molybdenum carbide These components are not preferred if their total amount is less than 10%, since the fracture resistance becomes inferior. It is not preferable because the property becomes inferior. Therefore, the total amount of tungsten carbide and molybdenum carbide is set to 10 to 35%.

【0023】(ニ) 周期律表5a族金属の炭化物また
は窒化物 これら成分はいずれも耐熱変形性を付与する成分である
が、周期律表5a族金属の炭化物または窒化物が3%未
満では所望の耐熱変形性が得られず、一方、25%を越
えて含有しても耐欠損性が低下するので好ましくない。
(D) Carbides or nitrides of metals of group 5a of the periodic table All of these components are components that impart heat-resistant deformation resistance. Cannot be obtained, and on the other hand, if it exceeds 25%, the fracture resistance is undesirably reduced.

【0024】したがって、周期律表5a族金属の炭化物
または窒化物の含有量は3〜25%に定めた。
Therefore, the content of the carbide or nitride of the Group 5a metal of the periodic table is set to 3 to 25%.

【0025】(ホ) Zrおよび/またはHfの炭化物
もしくは窒化物 これら成分も耐熱変形性を付与する成分であるが、その
含有量が1%未満では所望の耐熱変形性が得られず、一
方、5%を越えて含有しても耐欠損性が低下するので好
ましくない。したがって、Zrおよび/またはHfの炭
化物もしくは窒化物は1〜5%の範囲に定めた。
(E) Carbides or nitrides of Zr and / or Hf These components are also components that impart thermal deformation resistance, but if the content is less than 1%, desired thermal deformation resistance cannot be obtained. If the content exceeds 5%, the fracture resistance is undesirably reduced. Therefore, the carbide or nitride of Zr and / or Hf is set in the range of 1 to 5%.

【0026】なお、上記(ニ)および(ホ)の成分を炭
化チタンと共に含有する時は、それらの合計量が25〜
60%の範囲にあることが好ましい。
When the above components (d) and (e) are contained together with titanium carbide, the total amount thereof is 25 to
Preferably it is in the range of 60%.

【0027】この発明の結合相の格子定数が3.524
オングストロームを越え3.545オングストローム以
の範囲にあるサーメット製切削工具を作製するには、
焼結雰囲気を一部または全部の焼結期間において、CH
4 またはCO2 を含む浸炭性ガスを使用する。
The lattice constant of the binder phase of the present invention is 3.524.
Over Angstroms and 3.545 Angstroms or less
To make a cermet cutting tool in the range below ,
The sintering atmosphere is changed to CH or CH during part or all of the sintering period.
Carburizing gas containing 4 or CO 2 is used.

【0028】[0028]

【実施例】原料粉末として、TiC粉末(平均粒径:
1.5μm)、TiN粉末(平均粒径:1.0μm)、
TiCN粉末(平均粒径:1.5μm)、ZrC粉末
(平均粉末:1.5μm)、HfC粉末(平均粒径:
1.0μm)、TaC粉末(平均粒径:1.2μm)、
Mo2 C粉末(平均粒径:1.5μm)、WC粉末(平
均粒径:1.0μm)、NbC粉末(平均粒径:1.3
μm)、Co粉末(平均粒径:1.2μm)、Ni粉末
(平均粒径:1.0μm)およびグラファイト粉末(平
均粒径:1.0μm)を用意し、これら原料粉末を表1
に示される割合に配合し、混合し、プレス成形して圧粉
体を作製した。この圧粉体を表2に示される条件で焼結
し、表2に示される結合相の格子定数を有する本発明サ
ーメット製フライス切削工具(以下、本発明切削工具と
いう)1〜7および従来サーメット製フライス切削工具
(以下、従来切削工具という)1〜6を作製した。尚、
表2に示した結合相の格子定数は(1,1,1)面にお
ける値である。
EXAMPLES As raw material powder, TiC powder (average particle size:
1.5 μm), TiN powder (average particle size: 1.0 μm),
TiCN powder (average particle size: 1.5 μm), ZrC powder (average powder: 1.5 μm), HfC powder (average particle size:
1.0 μm), TaC powder (average particle size: 1.2 μm),
Mo 2 C powder (average particle size: 1.5 μm), WC powder (average particle size: 1.0 μm), NbC powder (average particle size: 1.3)
μm), Co powder (average particle size: 1.2 μm), Ni powder (average particle size: 1.0 μm), and graphite powder (average particle size: 1.0 μm).
, Were mixed and press-molded to produce a green compact. This green compact was sintered under the conditions shown in Table 2, and the cermet milling cutting tools of the present invention (hereinafter, referred to as the present invention cutting tools) 1 to 7 having the lattice constant of the binder phase shown in Table 2 and conventional cermets Milling cutting tools (hereinafter referred to as conventional cutting tools) 1 to 6 were manufactured. still,
The lattice constants of the binding phases shown in Table 2 are values on the (1,1,1) plane.

【0029】これら本発明切削工具1〜7および従来切
削工具1〜6を用い、下記の条件の高速フライス切削試
験を行ない、切刃に欠損が生じるまでの時間を測定し、
その結果を表2に示した。
Using these cutting tools 1 to 7 of the present invention and the conventional cutting tools 1 to 6, a high-speed milling test under the following conditions was performed, and the time until the cutting edge was chipped was measured.
The results are shown in Table 2.

【0030】高速フライス切削試験条件 被削材 :SCM440(HB 220)の角材、 切削速度 :250m/min 、 切込み :1.5mm、 送 り :0.21mm刃(1枚刃、乾式、センターカ
ット)
High-speed milling cutting test conditions Work material: Square material of SCM440 (HB220), Cutting speed: 250 m / min, Depth of cut: 1.5 mm, Feeding: 0.21 mm blade (1 blade, dry type, center cut)

【0031】[0031]

【表1】 [Table 1]

【0032】[0032]

【表2】 [Table 2]

【0033】[0033]

【発明の効果】表1および表2に示される結果から、結
合相の格子定数が3.545〜3.524オングストロ
ームの範囲内にありかつ0.5<Ni/(Co+Ni)
<1.0である本発明切削工具1〜7は、格子定数が
3.545オングストロームを越える従来切削工具1〜
6に比べて工具寿命が格段にすぐれていることがわか
る。
From the results shown in Tables 1 and 2, the lattice constant of the binder phase is in the range of 3.545 to 3.524 angstroms and 0.5 <Ni / (Co + Ni).
<1.0, the cutting tools 1 to 7 of the present invention have a lattice constant of more than 3.545 angstroms.
It can be seen that the tool life is much better than that of No. 6.

【0034】したがって、この発明のサーメット製切削
工具は高速フライス切削に適用して従来よりも生産性を
向上させることができる。
Therefore, the cermet cutting tool of the present invention can be applied to high-speed milling to improve productivity as compared with the conventional one.

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) B23C 5/16 C22C 29/02 C22C 29/16 B23B 27/14 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) B23C 5/16 C22C 29/02 C22C 29/16 B23B 27/14

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 Ni/(Co+Ni)で表わされる重量
比が0.5より大きく1.0より小さい範囲にあるNi
およびCoを主成分とする結合相を重量%で5〜30%
含有し、残りが硬質分散相からなるサーメット製切削工
具であって、上記結合相の格子定数は3.524オング
ストロームを越え3.545オングストローム以下の範
囲にあることを特徴とする高速フライス切削用サーメッ
ト製切削工具。
1. Ni in which a weight ratio represented by Ni / (Co + Ni) is in a range of more than 0.5 and less than 1.0.
And 30 to 30% by weight of a binder phase mainly containing Co and
A cermet cutting tool comprising a hard disperse phase and the rest having a lattice constant of 3.524 angstroms.
A cermet cutting tool for high-speed milling, characterized by being in the range of more than 3.55 angstroms to over strom .
【請求項2】 上記硬質分散相は、下記の(1)〜
(4)のうちのいずれかの成分組成を有することを特徴
とする請求項1記載の高速フライス切削用サーメット製
切削工具。 (1) 炭化チタン:25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。 (2) 周期律表5a族金属の炭化物または窒化物の少
なくとも1種:3〜25%と残部炭化チタンとの合計:
25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。 (3) Zrおよび/またはHfの炭化物もしくは窒化
物のうち少なくとも1種:1〜5%と残部炭化チタンと
の合計:25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。 (4) 周期律表5a族金属の炭化物または窒化物の少
なくとも1種:3〜25%とZrおよび/またはHfの
炭化物もしくは窒化物の少なくとも1種:1〜5%と残
部炭化チタンとの合計:25〜60%、 窒化チタン:15〜30%、 炭化タングステンと炭化モリブデンの合計:10〜35
%、 および/またはこれら2種以上の相互固溶体。
2. The hard dispersed phase comprises the following (1) to
The cermet cutting tool for high-speed milling according to claim 1, which has any one of the component compositions of (4). (1) Titanium carbide: 25 to 60%, Titanium nitride: 15 to 30%, Total of tungsten carbide and molybdenum carbide: 10 to 35
% And / or a mutual solid solution of two or more of these. (2) At least one kind of a carbide or nitride of a metal of Group 5a of the periodic table: 3 to 25% and a balance of titanium carbide:
25-60%, titanium nitride: 15-30%, total of tungsten carbide and molybdenum carbide: 10-35
% And / or a mutual solid solution of two or more of these. (3) at least one of Zr and / or Hf carbide or nitride: 1 to 5% and the balance of titanium carbide: 25 to 60%; titanium nitride: 15 to 30%; and tungsten carbide and molybdenum carbide Total: 10-35
% And / or a mutual solid solution of two or more of these. (4) The total of at least one kind of carbide or nitride of a metal of Group 5a of the periodic table: 3 to 25%, at least one kind of carbide or nitride of Zr and / or Hf: 1 to 5%, and the balance titanium carbide. : 25 to 60%, Titanium nitride: 15 to 30%, Total of tungsten carbide and molybdenum carbide: 10 to 35
% And / or a mutual solid solution of two or more of these.
JP28050793A 1993-10-14 1993-10-14 Cermet cutting tools for high speed milling Expired - Lifetime JP3264064B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28050793A JP3264064B2 (en) 1993-10-14 1993-10-14 Cermet cutting tools for high speed milling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28050793A JP3264064B2 (en) 1993-10-14 1993-10-14 Cermet cutting tools for high speed milling

Publications (2)

Publication Number Publication Date
JPH07112313A JPH07112313A (en) 1995-05-02
JP3264064B2 true JP3264064B2 (en) 2002-03-11

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Country Link
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Publication number Priority date Publication date Assignee Title
JP6956259B2 (en) 2018-03-29 2021-11-02 京セラ株式会社 Cemented carbide and coating tools and cutting tools using it
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